/* General Reset */

html {
    scroll-behavior: smooth;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: rgb(38, 38, 38);
    scroll-behavior: smooth;
}

/* Header Styles */
header {
    background-color: rgb(38, 38, 38);
    color: #fff;
    padding: 15px;
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 1;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}



nav ul {
    list-style: none;
    display: flex;

    margin-right: 20px;
    align-items: center;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 18px;
}

nav ul li a:hover {
    text-decoration: underline;
}

nav ul.subjects {
    list-style: none;
    display: flex;
    margin-right: 20px;
}

nav ul.subjects li {
    margin-left: 20px;
}

nav ul.subjects li a {
    color: #fff;
    text-decoration: none;
    font-size: 18px;
}

nav ul.subjects li a:hover {
    text-decoration: underline;
}

/* Page Content */
.content {
    padding: 100px 0px 0px 0px;
    text-align: center;
}

.content h1 {
    font-size: 36px;
    margin-bottom: 20px;
}

.concept-list {
    list-style: none;
    padding: 0;
    margin: 20px 0;

}

.concept-list li {
    margin: 10px 0;
    font-size: 22px;
    margin-bottom: 20px;
}

.concept-list li a {
    text-decoration: none;
    color: #000000;
    cursor: pointer;
    background: #000000;
    color: white;
    padding: 10px;
    border-radius: 5px;
    display: flex;
    width: fit-content;
}

.concept-list li a:hover {
    text-decoration: underline;
}

/* Concept Content */
.concept-content {
    display: none;
    margin: 20px 0;
}

.concept-content h2 {
    font-size: 28px;
    margin-bottom: 10px;
}

.concept-content p {
    font-size: 18px;
}

/* Footer */
footer {
    text-align: center;
    padding: 10px;
    background-color: #333;
    color: #fff;
    position: relative;
    bottom: 0;
    width: 100%;
}

.container-lg {
    --bs-gutter-x: 1.5rem;
    --bs-gutter-y: 0;
    width: 100%;
    padding-right: calc(var(--bs-gutter-x) * .5);
    padding-left: calc(var(--bs-gutter-x) * .5);
    margin-right: auto;
    margin-left: auto;
    text-align: left;
}

.section-1 {
    max-width: 50%;
    align-items: center;
    text-align: left;
    margin: auto;
    border: solid 1px;
}

.introduction {
    text-align: left;
}

.concept-list {
    text-align: left;
    padding-left: 20px;
}

.concept-list {
    margin: 100px;
}

@media (max-width:393px) {
    .concept-list {
        margin: 10px;

    }
}


@media (max-width:492px) {
    .concept-list {
        margin: 10px;

    }
}

.question-block {
    background: #ffffff;
    border-radius: 8px;

    padding: 20px;
    max-width: 740px;
    width: auto;
    margin: auto;
}

.question {
    border-bottom: 1px solid #ddd;
    padding-bottom: 15px;
    margin-bottom: 15px;
    position: relative;
}

.question:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.question p {
    font-size: 1.1em;
    margin: 0 0 10px;
    font-weight: 500;
    color: #333;
}

.question img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 10px;
}

.choices {
    margin: 10px 0;
}

.choices label {
    display: block;
    background: #edf4ff;
    border-radius: 25px;
    padding: 10px 20px;
    margin-bottom: 8px;
    font-size: 1em;
    color: #555;
    cursor: pointer;
    transition: background 0.3s, color 0.3s, transform 0.3s;
    position: relative;

    border: 2px solid transparent;
    overflow: hidden;
    /* To contain the ripple within the label */
}

.choices input[type="radio"] {
    display: none;
}

/* Animation when checked */
.choices input[type="radio"]:checked+span {
    color: #007bff;
    font-size: xx-large;
    position: relative;
    z-index: 1;
}

.choices input[type="radio"]:checked+span::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300%;
    height: 300%;
    background: rgba(0, 123, 255, 0.2);
    border-radius: 25px;
    transform: translate(-50%, -50%) scale(0);
    animation: ripple 0.6s ease-out;
    z-index: 0;
    /* Behind the text */
}

@keyframes ripple {
    0% {
        transform: translate(-50%, -50%) scale(0);
    }

    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0;
    }
}

.result {
    font-size: 0.9em;
    font-weight: 500;
    margin-top: 10px;
}

.correct {
    border-color: #28a745;
    background-color: #d4edda;
    color: #155724;
}

.incorrect {
    border-color: #dc3545;
    background-color: #f8d7da;
    color: #721c24;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.3s ease;
    display: block;
    width: 100%;
    margin-top: 20px;
}

button:hover {
    background-color: #0056b3;
}

.score {
    font-size: 1.2em;
    font-weight: 600;
    margin-top: 20px;
}


h1,
h2,
h3 {
    color: #333;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th,
td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
}

th {
    background-color: #f2f2f2;
}

img {
    max-width: 100%;
    height: auto;
}


.LO1 {

    margin: auto;
    width: 100%;
    height: 100%;
    background: #f5f5dc;
    /* Light beige color for the page background */
    border: 2px solid #8B4513;
    /* Dark brown color for the book cover */
    border-radius: 10px;
    /* Rounded corners to mimic a book cover */
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
    /* Shadow for a 3D effect */
    max-width: 90%;
    top: 0;
    left: 0;
    transform-style: preserve-3d;
    /* Enable 3D transformations */
    transform: rotateY(0deg);
    /* Adjust rotation for perspective */
    transition: transform 0.5s;
    /* Smooth transition for 3D effect */

}


.creators-border {
    display: flex;
    flex-wrap: wrap;
}

.creators-border-item {
    padding: 10px;
}



.creators-border img {
    width: 100px;
    /* Set a fixed width */
    height: 100px;
    border-radius: 50%;
    /* Makes the image circular */
    border: 3px solid #000;
}

.creators-border h5 {
    display: flex;
    text-align: center;
}


.animated-button-quiz {
    padding: 10px 20px;
    font-size: 16px;
    display: inline;
    color: white;
    background-color: #3498db;
    border: none;
    margin-top: 10px;
    border-radius: 5px;
    max-width: 100px;
    margin: auto;
    margin-bottom: 10px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.animated-button-quiz:hover {
    background-color: #2980b9;
    transform: translateY(-5px);
}

.line {
    content: "";
    position: relative;
    width: 100%;
    height: 2px;
    margin-bottom: 40px;
    /* Line thickness */
    background-color: black;
    /* Line color */
    bottom: 0;
    /* Position the line at the bottom of the section */
    left: 0;
    transform: translateY(100%);
}


.nav-link {
    text-decoration: none;
    padding: 10px 15px;
    color: #ded0d0;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 1px;

    position: relative;
    transition: color 0.3s ease;
}

/* Hover effect with underline */
.nav-link::after {
    content: '';
    position: absolute;
    text-decoration: none;
    width: 0;
    height: 2px;
    background-color: #007BFF;
    bottom: 0;
    left: 0;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    color: #007BFF;
}

/* Active state for selected link */
.nav-link.active {
    color: #007BFF;
    font-weight: 600;
}

@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 20px;
    }

    .nav-link {
        text-align: center;
    }
}

.menu-icon {
    display: none;
}

.menu-icon i {
    color: #fff;
    font-size: 30px;
}

@media (max-width: 810px) {
    .menu-icon {
        display: block;
        cursor: pointer;
    }

    nav ul {
        position: absolute;
        top: 70px;
        z-index: 1000;
        left: 0;
        right: 0;
        flex-direction: column;
        text-align: center;
        background: rgba(0, 0, 0, 0.7);
        width: 100%;
        gap: 0;

        /* Ensures the menu stays on top */

        margin-top: 27.5px;
        overflow: hidden;
        max-height: 0;
        /* Initialize with max-height 0 */
        transition: max-height 0.5s ease;
        /* Add transition effect */
    }

    nav ul li {
        padding: 20px;
    }

    #menulist {
        transition: max-height 0.5s ease;
        /* Ensures the menu stays on top */

    }

    .content {
        margin-top: 250px;
    }

    .form-container {
        margin-top: 380px;
    }

    .Main-title {
        padding-top: 250px;
    }



}

.Main-title {
    margin-top: 100px;
    margin-left: 10px;
    color: white;
}

/* Responsive Grid Container */
.video-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    padding: 20px;
}

/* Video Box */
.video-box {
    width: 350px;
    background: #ffffff;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
    padding: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border 0.3s ease;
}

.video-box:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.1);
    border-color: #ccc;
}

/* Video Title */
.video-title {
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    margin-bottom: 12px;
    color: #222;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Iframe */
iframe {
    width: 100%;
    height: 200px;
    border: none;
    border-radius: 6px;
    background-color: #000;
}

/* Responsive Adjustments */
@media (max-width: 1024px) {
    .video-box {
        width: 320px;
    }
}

@media (max-width: 768px) {
    .video-box {
        width: 100%;
        max-width: 95vw;
    }

    iframe {
        height: 190px;
    }
}

@media (max-width: 480px) {
    .video-box {
        padding: 10px;
    }

    .video-title {
        font-size: 0.95rem;
    }

    iframe {
        height: 160px;
    }
}
/* Footer */

/* Footer styles */
.main-footer {
    background: #0b0b15;
    position: relative;
    bottom: 0;
    width: 100%;
    padding: 0 100px;
    /* border-radius: 60px 0 0 0; */
    color: white;
}

/* TOP FOOTER */
.top-footer {
    display: flex;
    padding: 40px 0;
    flex-wrap: wrap;
    gap: 50px;
    justify-content: space-between;
}

.logo-box {
    max-width: 250px;
}

.logo-box .footer-logo {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.logo-title {
    font-size: 32px;
}

.label-menu {
    font-family: "Montserrat", sans-serif;
    font-weight: 600;
    position: relative;
    width: fit-content;
    padding-bottom: 8px;
    margin-bottom: 16px;
    font-size: 17.5px;
}

.label-menu::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: rgb(255, 255, 255, 0.3);
    bottom: 0;
}

.menu-box {
    display: flex;
    flex-direction: column;
    gap: 8px;
    list-style: none;
    padding: 0;
    font-size: 15px;
}

.menu-box a {
    /* border: solid; */
    text-decoration: none;
    color: #C2C4C8;
    position: relative;
    left: 0;
    bottom: 0;
    transition: 0.25s;
}

.menu-box a:hover {
    left: 4px;
    bottom: 1px;
    color: white;
}

.newsletter-box {
    max-width: 300px;
}

.newsletter-message {
    color: #C2C4C8;
}

.input-box {
    /* border: solid; */
    display: flex;
    margin-top: 16px;
}

.email-input {
    width: 100%;
    padding: 12px;
    border-radius: 12px 0 0 12px;
    border: none;
    outline: none;
    color: black;
    font-weight: 500;
}

.send-btn {
    background: #25CAAC;
    width: 55px;
    border: none;
    border-radius: 0 12px 12px 0;
    font-size: 20px;
    cursor: pointer;
    transition: 0.25s;
}

.send-btn:hover {
    background: #3DE9C9;
}

/* END TOP FOOTER */

/* BOTTOM FOOTER */
.bottom-footer {
    /* border: solid; */
    display: flex;
    justify-content: space-between;
    padding: 25px 0;
    border-top: solid 2px rgb(255, 255, 255, 0.05);
    align-items: center;
}

.copyright-txt {
    color: #C2C4C8;
    text-align: center;
}

.social-media {
    /* border: solid; */
    display: flex;
    gap: 24px;
}

.social-media i {
    font-size: 32px;
    color: #C2C4C8;
    position: relative;
    bottom: 0;
    transition: 0.25s;
}

.social-media i:hover {
    bottom: 3px;
    color: white;
}

/* END BOTTOM FOOTER */

/* RESPONSIVE SCREEN */
@media (max-width: 1024px) {
    .main-footer {
        padding: 0 50px;
    }

    .logo-box {
        min-width: 100%;
    }
}

@media (max-width: 768px) {
    .main-footer {
        padding: 0 25px;
    }

    .bottom-footer {
        flex-direction: column;
        gap: 25px;
    }
}

/* End footer */

/* Hero Section */
.hero {
    position: relative;
    text-align: center;
    color: white;
}

.hero-section {
    position: relative;
}

.hero-shade {
    z-index: 0;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    background: rgb(0 0 0 / 19%);
    pointer-events: none;
}

.hero-shade.darker-top {
    background: rgb(0 0 0 / 27%);
    background: linear-gradient(180deg, rgba(0, 0, 0, .3) 0%, rgba(0, 0, 0, .19) 35%, rgba(0, 0, 0, .19) 100%);
}

.hero-type-video {
    height: 100svh;
}

.hero img {
    width: 100%;
    height: auto;
}

.hero-content {
    position: absolute;
    left: 0;
    bottom: 0;
    right: 0;
    top: 0;
    display: flex;
    align-items: center;
}

.has-transparent-menu .hero-content {
    top: 82.79px;
}


.hero-content-inner {
    text-align: left;
    max-width: 1280px;
    margin: auto;
    display: flex;
    align-items: center;
    flex-direction: column;
    width: 100%;
}

.hero-content h1 {
    padding: 0 12px;
    margin: 0;
    color: #FFF;
    font-family: "SabonNext LT";
    font-size: 50px;
    font-weight: 600;
    line-height: 65px;
    text-align: center;
}

.video-ada-bttn {
    margin-top: 25px;
}

.hero-vid,
.hero-video-wrapper {
    display: block;
}

.hero-video-wrapper {
    position: absolute;
    width: 100%;
    height: 100svh;
    object-fit: cover;
    top: 0;
}

video#hero-video {
    width: 100%;
    position: absolute;
    top: 0;
    height: 100svh;
    object-fit: cover;
    max-height: 1080px;
    left: 0;
    width: 100%;
}

@media only screen and (min-width: 768px) {

    .hero-content h1 {
        font-size: 60px;
        line-height: 75px;
    }
}

@media only screen and (min-width: 992px) {

    .hero-content h1 {
        margin: 0 0 -20px 0;
        font-size: 90px;
        line-height: 108px;
        text-align: left;
    }

    .hero-content h1.hero-homepage {
        font-size: 80px;
    }

    .hero-content {
        left: 35px;
        bottom: 85px;
        right: 35px;
        top: unset;
    }

    .has-transparent-menu .hero-content {
        top: unset;
    }


    .hero-content-inner {

        align-items: flex-end;
        flex-direction: row;
    }
}


/* Hero Video Controls */
.video-ada-bttn {
    background: none;
    border: none;
}

.video-ada-bttn img {
    width: 35px;
    opacity: .7;
    transition: opacity 0.4s ease;
}

.video-ada-bttn:hover img {
    opacity: 1;
}


.video-ada-bttn.playing .play-icon {
    display: none;
}

.video-ada-bttn.paused .pause-icon {
    display: none;
}

.social-link {
    display: inline-flex;
    align-items: center;
    background-color: #0b0b15;
    border-radius: 6px;
    padding: 8px 12px;
    transition: background-color 0.3s;
}

.social-link:hover {
    background-color: #ddd;
}

.icon {
    width: 20px;
    height: 20px;
    margin-right: 8px;
}